<template>
	<view class="cart-container" v-if="cart.length !==0">
    <!-- 收获地址 -->
    <my-address></my-address>
    <!-- 购物车商品列表的标题区域 -->
    <view class="cart-title">
      <!-- 左侧的图标 -->
      <uni-icons type="shop" size="18"></uni-icons>
      <!-- 描述文本 -->
      <text class="cart-title-text">购物车</text>
    </view>
    <!-- 循环渲染购物车中的商品信息 -->
     <!-- 商品列表区域 -->
     <uni-swipe-action>
        <block v-for="(goods, i) in cart" :key="i">
          <uni-swipe-action-item :options="options"  @click="swipeActionClickHandler(goods)">
           <my-goods :goods="goods" :show-radio="true" :show-num="true"  @radio-change="radioChangeHandler" @num-change="numberChangeHandler"></my-goods>        
         </uni-swipe-action-item>
       </block>
     </uni-swipe-action>
     <!-- 结算组件 -->
     <my-settle></my-settle>
	</view>
  <!-- 空白购物车的区域 -->
    <!-- 空白购物车区域 -->
    <view class="empty-cart" v-else>
      <image src="/static/empty.webp" class="empty-img"></image>
      <text class="tip-text">空空如也~</text>
    </view>
</template>

<script>
 import badgeMix from '@/mixins/tabbar-badge.js'
 import { mapState, mapMutations } from 'vuex'
	export default {
    mixins:[badgeMix],
    computed: {
      // 将 m_cart 模块中的 cart 数组映射到当前页面中使用
      ...mapState('m_cart', ['cart']),
    },
		data() {
			return {
				options:[{
          text:'删除',
          style:{
            backgroundColor:'#C00000'
          }
        }]
			};
		},
    methods:{
       ...mapMutations('m_cart', ['updateGoodsState','updateGoodsCount','removeGoodsById']),
       // 商品的勾选状态发生了变化
        radioChangeHandler(e) {
          console.log(e) // 输出得到的数据 -> {goods_id: 395, goods_state: false}
           this.updateGoodsState(e)
        },
        // 商品的数量发生了变化
        numberChangeHandler(e) {
          this.updateGoodsCount(e)
        },
        swipeActionClickHandler(goods){
           this.removeGoodsById(goods.goods_id)
        }

    }
	}
</script>

<style lang="scss">
  .cart-container {
    padding-bottom: 50px;
  }

.cart-title {
  height: 40px;
  display: flex;
  align-items: center;
  font-size: 14px;
  padding-left: 5px;
  border-bottom: 1px solid #efefef;
  .cart-title-text {
    margin-left: 10px;
  }
}
.empty-cart {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 150px;

  .empty-img {
    width: 90px;
    height: 90px;
  }

  .tip-text {
    font-size: 12px;
    color: gray;
    margin-top: 15px;
  }
}

</style>
